heros and heralds

What the hell is Heroes & Heralds mode? I need to collect Ability Cards? Is this DLC free? And is it available for PSN & XBL? I don't know the answer to any of these really, but you can check out what I posted in the story.

From Capcom

The free Heroes & Heralds mode DLC for Ultimate Marvel vs. Capcom 3 on PS3 and X360 is available today for download. In addition, Capcom is pleased to confirm that the Heroes & Heralds mode will be included standard in the upcoming PlayStation Vita version of Ultimate Marvel vs. Capcom 3. A new trailer highlighting the PS Vita-specific features is now available for download on the press site.

Heroes & Heralds is a separate mode that adds new and customizable features to online and offline gameplay. Players will choose between two factions – Heroes or Heralds– and will engage in a series of battles with the opposing side to help save the world or take it over. Gameplay in the Heroes & Heralds mode will be altered through the acquisition of Ability cards that range from basic alterations (speed boost) to game-changing, combo enhancing powers (invisibility or ability to pass through projectiles). Cards can be used in online and offline versions of the Heroes & Heralds modes as well as the training mode. Ability cards are based on classic Marvel and Capcom characters.